Bend-it
The concept is simple: Study the pattern of black and white balls in the booklet, then replicate it with the six unique Bend-it puzzle pieces. These pieces are each made of six connected white and black balls that can be bent in two places, transforming the pieces from straight rows into an assortment of different shapes to arrange on the game-board. When the color of the spheres on the game-board matches the pattern in the booklet, you are ready for your next challenge. Bend-it is sturdily made, pleasing to fiddle with, and has sixty puzzles ranging from easy to mind-bendingly difficult.

Please Note:
Three small errors in the challenges each show one white ball that should in fact be black. The manufacturer has already fixed this for future print runs, but if you have one of the first sets, this link shows you the correct challenges. Coloring these three white balls black (as indicated with a red circle in the pdf) solves the issue in the booklet.